Izindaba

Yini i-LED?

I-LED imele "i-Light Emitting Diode." Kuyidivayisi ye-semiconductor ekhipha ukukhanya lapho umsinga kagesi udlula kuyo. Ama-LED asetshenziswa ezinhlelweni eziningi ezahlukahlukene, kufaka phakathi ukukhanya, izibonisi, izinkomba, nokunye. Baziwa ngokusebenza kahle kwamandla, ukuqina, nokuphila isikhathi eside uma kuqhathaniswa nama-incandescent noma ama-fluorescent bulbs. Ama-LED aba ngemibala eyahlukene futhi angasetshenziswa kuhlu oluhlukile lwemikhiqizo, kusukela ezilambuni ezilula ezibonisayo ukuya kuzibonisi ze-elekthronikhi eziyinkimbinkimbi nezindawo zokukhanyisa.

Umgomo wokukhanyisa kwe-LED

Lapho ama-electron nezimbobo ekuhlanganeni kwe-PN kwe-diode ekhipha ukukhanya kuhlangana kabusha, ama-electron ashintsha esuka ezingeni eliphezulu lamandla aye ezingeni eliphansi lamandla, futhi ama-electron akhulula amandla eqile ngendlela yama-photon akhishiwe (amaza kagesi), okuholela ekutheni i-electroluminescence. Umbala wokukhanya uhlobene nezinto ezibonakalayo ezakha isisekelo sawo. Izakhi eziyinhloko ezifana ne-gallium arsenide diode ikhipha ukukhanya okubomvu, i-gallium phosphide diode ikhipha ukukhanya okuluhlaza, i-silicon carbide diode ikhipha ukukhanya okuphuzi, kanti i-gallium nitride diode ikhipha ukukhanya okuluhlaza okwesibhakabhaka.

Ukuqhathaniswa komthombo okhanyayo

I-LED: ukusebenza kahle kokuguqulwa kwe-electro-optical (cishe ama-60%), okuluhlaza okotshani nemvelo, impilo ende (kufika emahoreni ayi-100,000), i-voltage ephansi yokusebenza (cishe i-3V), akukho ukulahleka kokuphila ngemuva kokushintshwa okuphindaphindiwe, usayizi omncane, isizukulwane sokushisa esiphansi. , ukukhanya okuphezulu, okuqinile futhi kuhlala isikhathi eside, Kulula ukufiphalisa, imibala ehlukahlukene, i-beam egxilile futhi ezinzile, akukho ukubambezeleka ekuqaliseni.
Isibani se-incandescent: ukusebenza kahle kokuguqulwa kwe-electro-optical low (cishe u-10%), impilo emfushane (cishe amahora angu-1000), izinga lokushisa eliphezulu lokushisa, umbala owodwa kanye nokushisa kombala ophansi.
Amalambu e-Fluorescent: ukusebenza kahle kokuguqulwa kwe-electro-optical okuphansi (cishe u-30%), ayingozi emvelweni (aqukethe izakhi eziyingozi njenge-mercury, cishe 3.5-5mg/unit), ukukhanya okungalungiseki (amandla kagesi aphansi awakwazi ukukhanyisa), imisebe ye-ultraviolet, into elokozayo, ukuqalisa kancane Kancane, intengo yezinto ezingavuthiwe zomhlaba iyenyuka, ukushintsha okuphindaphindiwe kuthinta isikhathi sokuphila, futhi umthamo uyakhuphuka. ezinkulu.Amalambu akhipha igesi anomfutho ophezulu: adla amandla amaningi, awaphephile ukuwasebenzisa, anesikhathi esifushane sokuphila, futhi anezinkinga zokukhipha ukushisa. Asetshenziswa kakhulu ukukhanyisa kwangaphandle.

Izinzuzo LED

I-LED iyi-chip encane kakhulu efakwe ku-epoxy resin, ngakho incane futhi ilula. Ngokuvamile, i-voltage yokusebenza ye-LED ingu-2-3.6V, yamanje esebenzayo ingu-0.02-0.03A, futhi ukusetshenziswa kwamandla ngokuvamile akukhulu
0.1W. Ngaphansi kwezimo zamandla kagesi ezinzile nezifanele nezimo zokusebenza zamanje, impilo yesevisi yama-LED ingaba yinde ngamahora angu-100,000.
I-LED isebenzisa ubuchwepheshe obubandayo be-luminescence, obukhiqiza ukushisa okuphansi kakhulu kunezibani ezivamile zamandla afanayo. Ama-LED enziwe ngezinto ezingezona ezinobuthi, ngokungafani nezibani ze-fluorescent eziqukethe i-mercury, ezingabangela ukungcola. Ngesikhathi esifanayo, ama-LED angaphinda asetshenziswe futhi asetshenziswe kabusha.

Ukusetshenziswa kwe-LED

Njengoba ubuchwepheshe be-LED buqhubeka nokuvuthwa futhi bukhula ngokushesha, izinhlelo zokusebenza ze-LED eziningi zivela ekuphileni kwethu kwansuku zonke. Ama-LED asetshenziswa kakhulu ekubonisweni kwe-LED, amarobhothi, amalambu ezimoto, imithombo yokukhanyisa, imihlobiso yokukhanyisa, izibani zangemuva zesikrini se-LCD, njll.

Ukwakhiwa kwe-LED

I-LED iyi-chip ekhipha ukukhanya, ubakaki nezintambo ezifakwe ku-epoxy resin. Ilula, ayinabo ubuthi futhi inokumelana nokushaqeka okuhle. I-LED inesici sokwenziwa kwendlela eyodwa, futhi uma i-voltage ehlehlayo iphezulu kakhulu, izobangela ukuphuka kwe-LED. Isakhiwo sokwakheka esiyinhloko siboniswa emfanekisweni: